package com.yupi.yuojcodesandbox;

import cn.hutool.core.io.resource.ResourceUtil;
import cn.hutool.core.util.ArrayUtil;
import com.github.dockerjava.api.DockerClient;
import com.github.dockerjava.api.async.ResultCallback;
import com.github.dockerjava.api.command.*;
import com.github.dockerjava.api.model.*;
import com.github.dockerjava.core.DockerClientBuilder;
import com.github.dockerjava.core.command.ExecStartResultCallback;
import com.yupi.yuojcodesandbox.model.ExecuteCodeRequest;
import com.yupi.yuojcodesandbox.model.ExecuteCodeResponse;
import com.yupi.yuojcodesandbox.model.ExecuteMessage;
import org.springframework.stereotype.Component;
import org.springframework.util.StopWatch;

import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * Java 代码沙箱模板方法实现
 */
@Component
public class JavaDockerCodeSandbox extends JavaCodeSandboxTemplate {
    private static final long TIME_OUT = 5000L;
    private static final boolean FIRST_INIT = true;


    public static void main(String[] args) {
        JavaDockerCodeSandbox javaNativeCodeSandbox = new JavaDockerCodeSandbox();
        ExecuteCodeRequest executeCodeRequest = new ExecuteCodeRequest();
        executeCodeRequest.setInputList(Arrays.asList("1 2", "1 3"));
        String code = ResourceUtil.readStr("testCode/simpleComputeArgs/Main.java", StandardCharsets.UTF_8);
//        String code = ResourceUtil.readStr("testCode/unsafeCode/RunFileError.java", StandardCharsets.UTF_8);
//        String code = ResourceUtil.readStr("testCode/simpleCompute/Main.java", StandardCharsets.UTF_8);
        executeCodeRequest.setCode(code);
        executeCodeRequest.setLanguage("java");
        ExecuteCodeResponse executeCodeResponse = javaNativeCodeSandbox.executeCode(executeCodeRequest);
        System.out.println(executeCodeResponse);
    }

    /**
     * 3. 创建容器，把文件复制到容器内
     * @param userCodeFile
     * @param inputList
     * @return
     */
    @Override
    public List<ExecuteMessage> runFile(File userCodeFile, List<String> inputList) {
        String userCodeParentPath = userCodeFile.getParentFile().getAbsolutePath();

        // 获取默认的 Docker Client
        DockerClient dockerClient = DockerClientBuilder.getInstance().build();

        // 拉取镜像
        String image = "openjdk:8-alpine";
        if (FIRST_INIT) {
            PullImageCmd pullImageCmd = dockerClient.pullImageCmd(image);
            PullImageResultCallback pullImageResultCallback = new PullImageResultCallback() {
                @Override
                public void onNext(PullResponseItem item) {
                    System.out.println("下载镜像：" + item.getStatus());
                    super.onNext(item);
                }
            };
            try {
                pullImageCmd
                        .exec(pullImageResultCallback)
                        .awaitCompletion();
            } catch (InterruptedException e) {
                System.out.println("拉取镜像异常");
                throw new RuntimeException(e);
            }
        }

        System.out.println("下载完成");

        // 创建容器

        CreateContainerCmd containerCmd = dockerClient.createContainerCmd(image);
        HostConfig hostConfig = new HostConfig();
        hostConfig.withMemory(100 * 1000 * 1000L);
        hostConfig.withMemorySwap(0L);
        hostConfig.withCpuCount(1L);
        //hostConfig.withSecurityOpts(Arrays.asList("seccomp=安全管理配置字符串"));
        hostConfig.setBinds(new Bind(userCodeParentPath, new Volume("/app")));
        CreateContainerResponse createContainerResponse = containerCmd
                .withHostConfig(hostConfig)
                .withNetworkDisabled(true)
                .withReadonlyRootfs(true)
                .withAttachStdin(true)
                .withAttachStderr(true)
                .withAttachStdout(true)
                .withTty(true)
                .exec();
        System.out.println(createContainerResponse);
        String containerId = createContainerResponse.getId();

        // 启动容器
        dockerClient.startContainerCmd(containerId).exec();

        // docker exec keen_blackwell java -cp /app Main 1 3
        // 执行命令并获取结果
        List<ExecuteMessage> executeMessageList = new ArrayList<>();
        for (String inputArgs : inputList) {
            System.out.println(inputArgs);
            StopWatch stopWatch = new StopWatch();
            String[] inputArgsArray = inputArgs.split(" ");
            String[] cmdArray = ArrayUtil.append(new String[]{"java", "-cp", "/app", "Main"}, inputArgsArray);
            ExecCreateCmdResponse execCreateCmdResponse = dockerClient.execCreateCmd(containerId)
                    .withCmd(cmdArray)
                    .withAttachStderr(true)
                    .withAttachStdin(true)
                    .withAttachStdout(true)
                    .exec();
            System.out.println("创建执行命令：" + execCreateCmdResponse);

            ExecuteMessage executeMessage = new ExecuteMessage();
            final String[] message = {null};
            final String[] errorMessage = {null};
            long time = 0L;
            // 判断是否超时
            final boolean[] timeout = {true};
            String execId = execCreateCmdResponse.getId();
            ExecStartResultCallback execStartResultCallback = new ExecStartResultCallback() {
                @Override
                public void onComplete() {
                    // 如果执行完成，则表示没超时
                    timeout[0] = false;
                    super.onComplete();
                }

                @Override
                public void onNext(Frame frame) {
                    StreamType streamType = frame.getStreamType();
                    if (StreamType.STDERR.equals(streamType)) {
                        errorMessage[0] = new String(frame.getPayload());
                        System.out.println("输出错误结果：" + errorMessage[0]);
                    } else {
                        message[0] = new String(frame.getPayload());
                        System.out.println("输出结果：" + message[0]);
                    }
                    super.onNext(frame);
                }
            };

            final long[] maxMemory = {0L};

            // 获取占用的内存
            StatsCmd statsCmd = dockerClient.statsCmd(containerId);
            ResultCallback<Statistics> statisticsResultCallback = statsCmd.exec(new ResultCallback<Statistics>() {

                @Override
                public void onNext(Statistics statistics) {
                    System.out.println("内存占用：" + statistics.getMemoryStats().getUsage());
                    maxMemory[0] = Math.max(statistics.getMemoryStats().getUsage(), maxMemory[0]);
                }

                @Override
                public void close() throws IOException {

                }

                @Override
                public void onStart(Closeable closeable) {

                }

                @Override
                public void onError(Throwable throwable) {

                }

                @Override
                public void onComplete() {

                }
            });
            statsCmd.exec(statisticsResultCallback);
            try {
                stopWatch.start();
                dockerClient.execStartCmd(execId)
                        .exec(execStartResultCallback)
                        .awaitCompletion(TIME_OUT, TimeUnit.MICROSECONDS);
                stopWatch.stop();
                time = stopWatch.getLastTaskTimeMillis();
                statsCmd.close();
            } catch (InterruptedException e) {
                System.out.println("程序执行异常");
                throw new RuntimeException(e);
            }
            executeMessage.setMessage(message[0]);
            executeMessage.setErrorMessage(errorMessage[0]);
            executeMessage.setTime(time);
            executeMessage.setMemeory(maxMemory[0]);
            executeMessageList.add(executeMessage);
        }
        return executeMessageList;
    }

}




//package com.yupi.yuojcodesandbox;
//
//
//import cn.hutool.core.io.FileUtil;
//import cn.hutool.core.io.resource.ResourceUtil;
//
//import cn.hutool.core.util.ArrayUtil;
//import com.github.dockerjava.api.DockerClient;
//import com.github.dockerjava.api.async.ResultCallback;
//import com.github.dockerjava.api.command.*;
//import com.github.dockerjava.api.model.*;
//import com.github.dockerjava.core.DockerClientBuilder;
//import com.github.dockerjava.core.command.ExecStartResultCallback;
//import com.yupi.yuojcodesandbox.model.ExecuteCodeRequest;
//import com.yupi.yuojcodesandbox.model.ExecuteCodeResponse;
//import com.yupi.yuojcodesandbox.model.ExecuteMessage;
//import com.yupi.yuojcodesandbox.model.JudgeInfo;
//import com.yupi.yuojcodesandbox.utils.ProcessUtils;
//import org.springframework.util.StopWatch;
//
//import java.io.Closeable;
//import java.io.File;
//import java.io.IOException;
//import java.nio.charset.StandardCharsets;
//import java.util.ArrayList;
//import java.util.Arrays;
//import java.util.List;
//import java.util.UUID;
//import java.util.concurrent.TimeUnit;
//
///**
// * @Author: wenjupeng
// * @Date: 2025/01/20/10:38
// * @Description:
// * @Param:
// * @return:
// */
//public class JavaDockerCodeSandbox implements CodeSandbox {
//    private static final String GLOBAL_CODE_DIR_NAME = "tmpCode";
//    private static final String GLOBAL_JAVA_CLASS_NAME = "Main.java";
//    private static final long TIME_OUT = 5000L;
//    private static final String SECURITY_MANAGER_PATH = "E:\\D_soft\\learn_soft\\IDEA2023\\OJ_space\\yuoj-code-sandbox\\src\\main\\resources\\security";
//
//    //安全管理器
//    private static final String SECURITY_MANAGER_CLASS_NAME = "MySecurityManager";
//    private static final boolean FIRST_INIT = true;
//
//
//    public static void main(String[] args) {
//        JavaDockerCodeSandbox javaNativeCodeSandbox = new JavaDockerCodeSandbox();
//        ExecuteCodeRequest executeCodeRequest = new ExecuteCodeRequest();
//        executeCodeRequest.setInputList(Arrays.asList("1 2","3 4"));
//        //读取代码文件
//        String code = ResourceUtil.readStr("testCode/simpleCompute/Main.java", StandardCharsets.UTF_8);
////        String code = ResourceUtil.readStr("testCode/unsafeCode/ReadFileError.java", StandardCharsets.UTF_8);
//        //String code = ResourceUtil.readStr("testCode/unsafeCode/RunFileError.java", StandardCharsets.UTF_8);
//
//
//        //String code = ResourceUtil.readStr("testCode/simpleComputeArgs/Main.java", StandardCharsets.UTF_8);
//
//        executeCodeRequest.setCode(code);
//        executeCodeRequest.setLanguage("java");
//        //输入请求，拿出响应
//        ExecuteCodeResponse executeCodeResponse = javaNativeCodeSandbox.executeCode(executeCodeRequest);
//        System.out.println(executeCodeResponse);
//
//    }
//    @Override
//    public ExecuteCodeResponse executeCode(ExecuteCodeRequest executeCodeRequest) {
//        //System.setSecurityManager(new DenySecurityManager());
//        List<String> inputList = executeCodeRequest.getInputList();
//        String code = executeCodeRequest.getCode();
//        String language = executeCodeRequest.getLanguage();
//
////      1.把用户的代码保存为文件
//        //获取项目根目录
//        String userDir = System.getProperty("user.dir");
//        String globalCodePathName = userDir + File.separator + GLOBAL_CODE_DIR_NAME;
//        //判断全局代码目录是否存在，没有则新建
//        if(!FileUtil.exist(globalCodePathName)){
//            FileUtil.mkdir(globalCodePathName);
//        }
//        //把用户的代码隔离存放，因为每一个代码的名字都是Main.java
//        String userCodeParentPath = globalCodePathName + File.separator + UUID.randomUUID();
//        String userCodePath = userCodeParentPath + File.separator + GLOBAL_JAVA_CLASS_NAME;
//        File userCodeFile = FileUtil.writeString(code,userCodePath, StandardCharsets.UTF_8);
//
//        // 2.编译代码，得到class文件
//        String compileCmd = String.format("javac -encoding utf-8 %s",userCodeFile.getAbsolutePath());
//        try {
//            Process compileProcess = Runtime.getRuntime().exec(compileCmd);
//            ExecuteMessage executeMessage = ProcessUtils.runProcessAndMessage(compileProcess, "编译");
//            System.out.println(executeMessage);
//        } catch (Exception e) {
//            return getErrorResponse(e);
//        }
//        //3. 创建容器，把文件复制到容器内
//        //读取默认的Docker Client
//        DockerClient dockerClient = DockerClientBuilder.getInstance().build();
//        //拉取镜像
//        String image = "openjdk:8-alpine";
//        if(FIRST_INIT){
//            PullImageCmd pullImageCmd = dockerClient.pullImageCmd(image);
//            PullImageResultCallback pullImageResultCallback = new PullImageResultCallback(){
//                @Override
//                public void onNext(PullResponseItem item) {
//                    System.out.println("下载镜像："+item.getStatus());
//                    super.onNext(item);
//                }
//            };
//            try {
//                pullImageCmd
//                        .exec(pullImageResultCallback)
//                        .awaitCompletion();
//            } catch (InterruptedException e) {
//                System.out.println("拉取镜像异常");
//                throw new RuntimeException(e);
//            }
//        }
//        System.out.println("下载完成");
//
//        //创建容器
//        CreateContainerCmd containerCmd = dockerClient.createContainerCmd(image);
//        HostConfig hostConfig = new HostConfig();
//        hostConfig.withMemory(100 * 1000 * 1000L);
//        hostConfig.withCpuCount(1L);
//        hostConfig.setBinds(new Bind(userCodeParentPath,new Volume("/app")));
//        CreateContainerResponse createContainerResponse = containerCmd
//                .withHostConfig(hostConfig)
//                .withAttachStdin(true)
//                .withAttachStderr(true)
//                .withAttachStdout(true)
//                .withTty(true)
//                //.withCmd("echo","Hello Docker")
//                .exec();
//        System.out.println(createContainerResponse);
//        String containerId = createContainerResponse.getId();
//
//        //启动容器
//        dockerClient.startContainerCmd(containerId).exec();
//        //docker exec quirky_booth java -cp /app Main 1 3
//        //执行命令并获取结果
//        List<ExecuteMessage> executeMessageList = new ArrayList<>();
//        for (String inputArgs : inputList) {
//            StopWatch stopWatch = new StopWatch();
//            String[] inputArgsArray = inputArgs.split(" ");
//            String[] cmdArray = ArrayUtil.append(new String[] {"java","-cp","/app","Main"},inputArgsArray);
//            ExecCreateCmdResponse execCreateCmdResponse = dockerClient.execCreateCmd(containerId)
//                    .withCmd(cmdArray)
//                    .withAttachStderr(true)
//                    .withAttachStdin(true)
//                    .withAttachStdout(true)
//                    .exec();
//            ExecuteMessage executeMessage = new ExecuteMessage();
//            final String[] message = {null};
//            final String[] errorMessage = {null};
//            long time = 0L;
//            System.out.println("创建执行命令："+execCreateCmdResponse);
//            String execId = execCreateCmdResponse.getId();
//            ExecStartResultCallback execStartResultCallback = new ExecStartResultCallback(){
//                @Override
//                public void onNext(Frame frame) {
//                    StreamType streamType = frame.getStreamType();
//                    if(StreamType.STDERR.equals(streamType)){
//                        errorMessage[0] = new String(frame.getPayload());
//                        System.out.println("输出错误结果："+ errorMessage[0]);
//                    }else{
//                        message[0] = new String(frame.getPayload());
//                        System.out.println("输出结果："+ message[0]);
//                    }
//                    super.onNext(frame);
//                }
//            };
//            final long[] maxMemory = {0L};
//
//            // 获取占用的内存
//            StatsCmd statsCmd = dockerClient.statsCmd(containerId);
//            ResultCallback<Statistics> statisticsResultCallback = statsCmd.exec(new ResultCallback<Statistics>() {
//
//                @Override
//                public void onNext(Statistics statistics) {
//                    System.out.println("内存占用：" + statistics.getMemoryStats().getUsage());
//                    maxMemory[0] = Math.max(statistics.getMemoryStats().getUsage(), maxMemory[0]);
//                }
//
//                @Override
//                public void close() throws IOException {
//
//                }
//
//                @Override
//                public void onStart(Closeable closeable) {
//
//                }
//
//                @Override
//                public void onError(Throwable throwable) {
//
//                }
//
//                @Override
//                public void onComplete() {
//
//                }
//            });
//            statsCmd.exec(statisticsResultCallback);
//            try {
//                stopWatch.start();
//                dockerClient.execStartCmd(execId)
//                        .exec(execStartResultCallback)
//                        .awaitCompletion(TIME_OUT, TimeUnit.MICROSECONDS);
//                stopWatch.stop();
//                time = stopWatch.getLastTaskTimeMillis();
//                statsCmd.close();
//            } catch (InterruptedException e) {
//                System.out.println("程序执行异常");
//                throw new RuntimeException(e);
//            }
//            executeMessage.setMessage(message[0]);
//            executeMessage.setErrorMessage(errorMessage[0]);
//            executeMessage.setTime(time);
//            executeMessage.setMemory(maxMemory[0]);
//            executeMessageList.add(executeMessage);
//
//        }
//
//
//        ExecuteCodeResponse executeCodeResponse = new ExecuteCodeResponse();
//        return executeCodeResponse;
//    }
//
//    /**
//     * 获取错误响应
//     * @param e
//     * @return
//     */
//    private ExecuteCodeResponse getErrorResponse(Throwable e){
//        ExecuteCodeResponse executeCodeResponse = new ExecuteCodeResponse();
//        executeCodeResponse.setOutputList(new ArrayList<>());
//        executeCodeResponse.setMessage(e.getMessage());
//        executeCodeResponse.setStatus(2);
//        executeCodeResponse.setJudgeInfo(new JudgeInfo());
//        return executeCodeResponse;
//
//    }
//
//}
